*SUPPORT*
IN: dax wif gazzer lug kiki OUT: RED RED RED RED RED RED YELLOW YELLOW
IN: tufa wif OUT: GREEN GREEN GREEN
IN: tufa lug fep wif OUT: GREEN YELLOW BLUE BLUE BLUE
IN: fep wif OUT: BLUE BLUE BLUE
IN: fep kiki OUT: BLUE BLUE
IN: lug lug kiki gazzer tufa fep OUT: YELLOW YELLOW YELLOW YELLOW YELLOW YELLOW GREEN BLUE
IN: lug dax OUT: YELLOW RED
IN: fep OUT: BLUE
IN: lug gazzer dax kiki OUT: YELLOW YELLOW RED RED
IN: lug fep wif OUT: YELLOW BLUE BLUE BLUE
IN: tufa OUT: GREEN
IN: dax tufa lug tufa OUT: RED GREEN YELLOW GREEN
IN: dax fep OUT: RED BLUE
IN: lug kiki OUT: YELLOW YELLOW

*QUERY*
IN: tufa wif gazzer lug OUT: GREEN GREEN GREEN GREEN GREEN GREEN YELLOW
IN: dax kiki OUT: RED RED
IN: lug wif OUT: YELLOW YELLOW YELLOW
IN: dax fep lug lug wif OUT: RED BLUE YELLOW YELLOW YELLOW YELLOW
IN: tufa lug wif OUT: GREEN YELLOW YELLOW YELLOW
IN: dax OUT: RED
IN: lug OUT: YELLOW
IN: fep lug kiki OUT: BLUE YELLOW YELLOW
IN: dax lug gazzer fep dax wif OUT: RED YELLOW RED YELLOW BLUE RED RED RED
IN: tufa kiki OUT: GREEN GREEN

*GRAMMAR*
tufa -> GREEN 
 fep -> BLUE 
 dax -> RED 
 lug -> YELLOW 
 u1 wif -> [u1] [u1] [u1] 
 u1 kiki -> [u1] [u1] 
 x1 gazzer x2 -> [x1] [x1] [x2] 
 u1 x1 -> [u1] [x1] 
 